Table 1.
Clinical characteristics of participants according to disease type
| Disease type | ||
|---|---|---|
| Crohn’s disease N = 283 |
Ulcerative colitis N = 227 |
|
| Age of diagnosis, mean (std) | 30 (11) | 34 (14) |
| Gender, n (%) | ||
| Female | 166 (59) | 97 (43) |
| Race, n (%) | ||
| White | 269 (95) | 213 (94) |
| Duration at endoscopy, mean (std) | 10 (9) | 9 (9) |
| Location, n (%) | ||
| TI | 80 (28) | N/A |
| Colon | 77 (27) | N/A |
| Ileocolonic | 126 (45) | N/A |
| Extent, n (%) | ||
| Proctitis | N/A | 25 (11) |
| Left-sided | N/A | 76 (33) |
| Extensive | N/A | 126 (56) |
| Behavior, n (%) | ||
| Inflammatory | 137 (48) | N/A |
| Stricturing | 61 (22) | N/A |
| Penetrating | 85 (30) | N/A |
| Perianal | 60 (21) | N/A |
| Steroid use, n (%) | ||
| Ever | 224 (79) | 177 (78) |
| Biologic use, n (%) | ||
| Ever | 135 (48) | 69 (30) |
HBI Harvey–Bradshaw Index, SIBDQ Short IBD Questionnaire, CRP C-reactive protein, ESR erythrocyte sedimentation rate